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Open Interest

derivatives
trading

Open interest is the total number of active derivative contracts that have not yet been closed or settled.

1
basic

Open interest measures how many futures or options contracts remain open. It increases when new long and short positions are created and decreases when existing positions are closed, expired, or settled.

2
interpretation

Traders use open interest with price and volume to understand market participation, but it is not a standalone prediction. Rising price with rising open interest may show new positioning; rising price with falling open interest may reflect shorts closing rather than fresh demand.

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